Once \(C_X\) , at any scale, is given from flavor observables and/or LHC studies, the corresponding LQ mass is restricted as long as the LQ coupling is set not too large for perturbation theory [1]}.
In Fig. REF , we plot the relation between \(C_X (\Lambda )\)  and \(M_\text{NP}\)  of Eq. (REF ).
The numerical factor \(N_X\)  is fixed as explained in the legend.
The Lorenz structures correspond to \(N_{S_1}=2\) ; \(N_{V_1,S_2} = 1\) ; \(N_{V_2}=1/2\) ; and \(N_T=1/4\)  for the present LQ models.
Then, one can check the accessible LQ mass from the plot.
For instance, \(|C_X^{cl} (\Lambda )| \sim \mathcal {O}(0.01)\)  is produced with \(M_\text{LQ} \lesssim 10\,\text{TeV}\)  for \(h_\text{LQ} \lesssim 1\)  in \( b \rightarrow c l \nu \) .
The mass could be \(M_\text{LQ} \sim 50\,\text{TeV}\)  at maximum if we allow the coupling as large as \(h_\text{LQ} =4\) .
